正时皮带的主要作用是用来驱动发动机的配气机构，使发动机的进、排气门在适当的时候开启或关闭，来保证全自动混凝土搅拌车发动机的汽缸能够正常地吸气和排气。
The main function of the timing belt is to drive the valve train of the engine, enabling the intake and exhaust valves of the engine to be opened or closed at appropriate times, to ensure that the cylinders of the fully automatic concrete mixer truck engine can normally inhale and exhaust.
在有的车型中正时皮带还负责驱动水泵。搅拌车的皮带属于橡胶部件，随着发动机工作时间的增加，正时皮带和正时皮带的附件，如正时皮带张紧轮、正时皮带张紧器和水泵等都会发生磨损或老化。
In some models, the timing belt is also responsible for driving the water pump. The belt of the mixer truck is a rubber component. As the engine working time increases, the timing belt and its accessories, such as the timing belt tensioner, timing belt tensioner, and water pump, will be worn or aged.
因此，凡是装有正时皮带的发动机，厂家都会有严格要求，在规定的周期内定期更换正时皮带及附件，更换周期则随着发动机的结构不同而有所不同，一般在搅拌车行驶到6万~10万时应该更换，具体的更换周期应该以搅拌车的保养手册说明为准。
Therefore, for engines equipped with timing belts, the manufacturer will have strict requirements to regularly replace the timing belt and accessories within the specified cycle. The replacement cycle varies depending on the structure of the engine. Generally, when the mixer truck reaches 60000 to 100000 kilometers, it should be replaced. The specific replacement cycle should be subject to the instructions in the maintenance manual of the mixer truck.
此外它的日常保养也要做好，比如：
In addition, its daily maintenance should also be done well, such as:
每次出车前应检查液压油位置，油位高出2～3㎝为宜；
Before each vehicle departure, the hydraulic oil level should be checked, and it is advisable to increase the oil level by 2-3 cm;
有黄油嘴的地方应每周打一次黄油，保证正常润滑。另外拖轮和滚道结合面处应3～4天加一次黄油，保持正常；
Places with grease fittings should be greased once a week to ensure normal lubrication. In addition, the junction surface between the tugboat and the raceway should be buttered once every 3-4 days to keep it normal;
后操纵手柄每次由搅拌变成卸料或由卸料变成搅拌都要在中间位置停顿一下，在搅拌筒停止转动后再执行下一动作。在手柄扳到极限位置时不能继续用力，防止油泵卡死；
Each time the rear control handle changes from mixing to unloading or from unloading to mixing, it should pause in the middle position, and then perform the next action after the mixing drum stops rotating. Do not continue to exert force when the handle is pulled to the limit position to prevent the oil pump from getting stuck;
每次收工时要将搅拌筒内外洗干净，保证搅拌筒内无积快。如果在工地卸料时间超过2～3小时回来时也要将搅拌筒内清洗干净。更多相关内容就来我们网站http://www.zkzdsljbc.com咨询了解吧！
At the end of each job, clean the inside and outside of the mixing drum to ensure that there is no accumulation of fast inside the mixing drum. If the unloading time at the construction site exceeds 2-3 hours, the mixing drum should also be cleaned when returning. For more relevant content, please visit our website http://www.zkzdsljbc.com Consult and understand!
